Annual instrumentation issue: Lasers: Introduction

Since their invention of a dozen years ago lasers have become a major subject of interest to physicists. The original interest in laser systems as examples of a new and intriguing physical phenomenon continues unabated and has spurred researchers to develop an impressive assortment of lasers of different types and properties. John Emmett brings us up to date on these activities in his article “Frontiers of laser development” (page 24).

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